Tester trainer



Aug. 17, 1943.

D. c. HQLAND ET AL TESTER TRAINER Filed Feb. 10, 1942 2 Sheets-Sheet 1mm v Aug. 17,1943. D. c. HOLAND ET AL 2,326,944

I TESTER TRAINER File d Feb. 10, 1942 2 Sheets-Sheet 2 1 word (V6 42flozzala 0 w lzzfzw We claim:

trode rings may be made of circular or oblong or any other shape or sizethan that shownin the drawings.

Projecting through the-wall 54 of a case 55 housing the clutch 5|, is alever 56 for. holding disengaged, when desired, the clutch plates 51 and58 which, mounted respectively on adjacent ends of spindles 50 and 52,are urged into engagementby coilspring 59 surrounding shaft 52.

Extending from, and securedto, an end of case 55 is a case 60'comprising a main section 6| surrounding spindle 50 and 'a terminal sec:

'tion 62 which, enclosing the gear 48, has its walls formed with squaredopenings to non-rotatablyrec'eive the electrode bar 45slidable there- 7comprising a simulated electrode member, a rod,

a handle .for supporting said elect-rode, member,

a ring mounted'on said electrode member for movement over said rod toproduce a signal when said ring contacts said rod, and means for varyingthe distance between said ring and said handle. 7

V 4." In apparatus of the character described, the

" combination of a'simulated electrode member supportedby ahandle; arod-a ring mounted on 7 said electrode member "for, movement over saidrod, means ior varyingthe distance between said ring, and saidhandleWhile. moving said through under the rack and pinion? relationa of suchelectrode bar and'gear.

In use, the case I0 is'set at any'convnient location, the supportingrods l2 and I5 clamped in adjusted position, and the 'arm l5 swung aboutpivot so asto extend atitheheight and an l desired;v correspondingtoivarious' welding "p0.-

sitions.

In operation the speed of the flexible is preferably adjusted, throughuse ,of; gears and motor control, so as to cause the,'electroderod 45 torecede at thefsame ratepfmOVementsas' does an electrode in actualwelding, andsuch speed may be variedto accountfor varying sizes andkinds of electrodes :used in-actualjwelding oprations.

In operation, likewise, the speedgoi the flexible V shaft 21 ispreferably adjusted; through: use of gears and motor controL so astQcause the red pyramid-26 on endless tape to move at. aratecorresponding to. the desired travel in the three-- tiorrof a weld inanactual weldin -operation, and

such movement of the type may, of .Co'u-rse,

varied so as to properly represent-various welding-situations. 7 3 I 7With the freceding electrode? and endlessjtape set in operation by powertransmitted through" flexible shafts from the electric motorsynchronized by gears for properspeed, the; electrode ring is passedover the red. at the pace'set bythemey:

- ing; pyramid until, on the scale ldflazrppint is noted where the ringcontacts the rod, thereby completing thecircuit and lighting the lamp,such point on the scale thus indicating howl-far the ring passed beforecontactingthe rod, there by serving as a measure orscore of steadinessof movement in all directions. I;

. The teeth are removed QDear tapered endQ Q to provide a toothlessspace 46 so that whenthe electrode is wasted that far, the gear willnot; continuetodrawitfarthen. y

l. Means for testing and training in xlwelding comprising asimulatedelectrodemember, a rod, and a ring mounted onsaid electrode member:

for passing oversaidrcd to produce a'signal when said ring contactssaidrcd v- -2.- Means for testing and training in welding .ring oversaid rod; and an indicator movablc ad- 7 jacent said rod for indicatingthe desired speed Tofniovlernent of said ring over said .rcd.

" 5." In apparatus of the character described, the

i'r'combination of. a -simulated electrode member, a

rod, ga ring mcun'ted on said electrode member for passing over saidrod, and means for iridicatingwhen said ring contactsvsaidrod.

p 6.; In apparatus of theicharacter described, the COmDilJati-OIIEOf" asimulated electrode member, a

'ro d a ring mountedon jsaid GIGCtI'OdQ'IIl-EfflbfilforVrnovement'overlsaid rod, ahandle-for saidelectrodewmember-andmeansior varying the disthe combination of tworelatively movable ole- Inents,-0neo-f said elements comprisingarod-like mem er an rt eb he i eleme t avin D m spaced apart greaterthan .the' diameter of .the other-element; signal-v rneans operated byany-contact' between such two elements, whereby saidother lelementan..be cived: w th d:

mentioned element and any contact between said 7 first-arid secondelements will produce a signal, .9 Means or testing, and training vinwelding comprising a simulated electrode ;member,- arod,

V a ringjmounted on s'aid;electrodemember for movement over said rod toproduce-a signal when said'ri'ng contactssaid rod, and 1a movable indicater, adjacent said rod for indicatingthe desired speed of movement ofsaid ringover said roda 10 In apparatus of'the'charact'er described,the. combination of; a simulated electrode memher, a support for saidelectrode member, a-r od said electrode memberbeing formed withispaced'portions adapted-to receive said rod ther'ebe tween'to produce a signalwhen any of said ps1 tions' contactssaid rod, means for varying-thedistanceibetween said spaced portions and said 7 7 support, and amovable indicator l for indicating the desired speed of 'movement-oflsaid ringover comprising a simulated electrode member, aged;

a ring mounted on-said electrode member ion movement over said rod toproduce asignal when 1 said ring contacts said rodgand anendless tapeindicator movable adjacent said rodi f or indicat-p ing thedesiredspeedof movementof said'ring over'said rod.

3. Means for testing andtraining inwelding j said rod.

e 11. In apparatusiofi the jcharacterdescribed;

the combination ofa rod, a simulated electrode member termed with-spacedportions adapted to receivethe' rod therebetween, and means" for in?dicatingwhen any of .said spacedportions con 1 tacts said rod.

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